diff --git a/package-lock.json b/package-lock.json
index fd26f343..fae7b605 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,8 +1,6 @@
 {
-  "name": "php-language-server",
-  "version": "0.0.0-development",
-  "lockfileVersion": 1,
   "requires": true,
+  "lockfileVersion": 1,
   "dependencies": {
     "@gimenete/type-writer": {
       "version": "0.1.3",
diff --git a/src/LanguageServer.php b/src/LanguageServer.php
index 05dd48aa..a30992bc 100644
--- a/src/LanguageServer.php
+++ b/src/LanguageServer.php
@@ -165,8 +165,11 @@ public function __construct(ProtocolReader $reader, ProtocolWriter $writer)
      * @param int|null $processId The process Id of the parent process that started the server. Is null if the process has not been started by another process. If the parent process is not alive then the server should exit (see exit notification) its process.
      * @return Promise <InitializeResult>
      */
-    public function initialize(ClientCapabilities $capabilities, string $rootPath = null, int $processId = null): Promise
+    public function initialize(ClientCapabilities $capabilities, string $rootPath = null, int $processId = null, string $rootUri = null): Promise
     {
+        if ($rootPath === null) {
+            $rootPath = uriToPath($rootUri);
+        }
         return coroutine(function () use ($capabilities, $rootPath, $processId) {
 
             if ($capabilities->xfilesProvider) {